NetNewsWire/Shared/Extensions/ArticleUtilities.swift

208 lines
4.7 KiB
Swift

//
// ArticleUtilities.swift
// NetNewsWire
//
// Created by Brent Simmons on 7/25/15.
// Copyright © 2015 Ranchero Software, LLC. All rights reserved.
//
import Foundation
import RSCore
import Articles
import Account
// These handle multiple accounts.
@discardableResult
func markArticles(_ articles: Set<Article>, statusKey: ArticleStatus.Key, flag: Bool) -> Set<Article>? {
let d: [String: Set<Article>] = accountAndArticlesDictionary(articles)
var updatedArticles = Set<Article>()
for (accountID, accountArticles) in d {
guard let account = AccountManager.shared.existingAccount(with: accountID) else {
continue
}
if let accountUpdatedArticles = account.markArticles(accountArticles, statusKey: statusKey, flag: flag) {
updatedArticles.formUnion(accountUpdatedArticles)
}
}
return updatedArticles
}
private func accountAndArticlesDictionary(_ articles: Set<Article>) -> [String: Set<Article>] {
let d = Dictionary(grouping: articles, by: { $0.accountID })
return d.mapValues{ Set($0) }
}
extension Article {
var webFeed: WebFeed? {
return account?.existingWebFeed(withWebFeedID: webFeedID)
}
var preferredLink: String? {
if let url = url, !url.isEmpty {
return url
}
if let externalURL = externalURL, !externalURL.isEmpty {
return externalURL
}
return nil
}
var body: String? {
return contentHTML ?? contentText ?? summary
}
var logicalDatePublished: Date {
return datePublished ?? dateModified ?? status.dateArrived
}
var isAvailableToMarkUnread: Bool {
guard let markUnreadWindow = account?.behaviors.compactMap( { behavior -> Int? in
switch behavior {
case .disallowMarkAsUnreadAfterPeriod(let days):
return days
default:
return nil
}
}).first else {
return true
}
if logicalDatePublished.byAdding(days: markUnreadWindow) > Date() {
return true
} else {
return false
}
}
func iconImage() -> IconImage? {
if let authors = authors, authors.count == 1, let author = authors.first {
if let image = appDelegate.authorAvatarDownloader.image(for: author) {
return image
}
}
if let authors = webFeed?.authors, authors.count == 1, let author = authors.first {
if let image = appDelegate.authorAvatarDownloader.image(for: author) {
return image
}
}
guard let webFeed = webFeed else {
return nil
}
let feedIconImage = appDelegate.webFeedIconDownloader.icon(for: webFeed)
if feedIconImage != nil {
return feedIconImage
}
if let faviconImage = appDelegate.faviconDownloader.faviconAsIcon(for: webFeed) {
return faviconImage
}
return FaviconGenerator.favicon(webFeed)
}
func byline() -> String {
guard let authors = authors ?? webFeed?.authors, !authors.isEmpty else {
return ""
}
// If the author's name is the same as the feed, then we don't want to display it.
// This code assumes that multiple authors would never match the feed name so that
// if there feed owner has an article co-author all authors are given the byline.
if authors.count == 1, let author = authors.first {
if author.name == webFeed?.nameForDisplay {
return ""
}
}
var byline = ""
var isFirstAuthor = true
for author in authors {
if !isFirstAuthor {
byline += ", "
}
isFirstAuthor = false
var authorEmailAddress: String? = nil
if let emailAddress = author.emailAddress, !(emailAddress.contains("noreply@") || emailAddress.contains("no-reply@")) {
authorEmailAddress = emailAddress
}
if let emailAddress = authorEmailAddress, emailAddress.contains(" ") {
byline += emailAddress // probably name plus email address
}
else if let name = author.name, let emailAddress = authorEmailAddress {
byline += "\(name) <\(emailAddress)>"
}
else if let name = author.name {
byline += name
}
else if let emailAddress = authorEmailAddress {
byline += "<\(emailAddress)>"
}
else if let url = author.url {
byline += url
}
}
return byline
}
}
// MARK: Path
struct ArticlePathKey {
static let accountID = "accountID"
static let accountName = "accountName"
static let webFeedID = "webFeedID"
static let articleID = "articleID"
}
extension Article {
public var pathUserInfo: [AnyHashable : Any] {
return [
ArticlePathKey.accountID: accountID,
ArticlePathKey.accountName: account?.nameForDisplay ?? "",
ArticlePathKey.webFeedID: webFeedID,
ArticlePathKey.articleID: articleID
]
}
}
// MARK: SortableArticle
extension Article: SortableArticle {
var sortableName: String {
return webFeed?.name ?? ""
}
var sortableDate: Date {
return logicalDatePublished
}
var sortableArticleID: String {
return articleID
}
var sortableWebFeedID: String {
return webFeedID
}
}